Electret microphone capsule schematic. ... [Steven Dufresne], should get you started in your well-equipped kitchen, assuming your kitchen is equipped with a 30 kV power supply.

Electret microphones are capable of high-quality output, and are prized for their smooth frequency response. However, unlike other types, they can’t simply be plugged directly into a mixing d… ...

The circuit uses only one IC, the well-known LM317, a low-cost power-supply regulator. Using this chip, you can modulate the adjustment-pin input with the audio signal from an electret condenser ...

The electret microphone capsule is similar to those commonly used in telephones, cassette ... Phantom-powered microphones derive power for their active circuitry from the receiving-end circuit through ...

You can use a simple boost converter, a filter circuit to reduce electromagnetic interference (EMI), and a little trickery to build a compact, ultra-low-noise, phantom power supply (48 V) that ...